Subatomic particle that determines the identity of the atom ? a - neutron b- nucleus c-electron d- proton

Protons have a positive charge. The number of protons in a nucleus determines the identity of the atom (element) and this number is called the atomic number.

D. Proton

your answer is d - proton good luck on ur test :)

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.